Carbureter for internal-combustion engine.



l 12.1. HlFNER. CRBUHETER FR INTERNAL CMBUSIWN ENGINES APPLICATIQM mm www, 1911..n

\ Patent@ oen 15, 1918 7 E. L HlFNER,

CAHBURUEH FUR INTERNAL Comusnun ENGINES.

APPLHCATGN FILED MAY 241191?- v Patented Oct. 15, 1918.

2 SHEETS--SHEET 2- throttle: Y

.tnotheijobject ot' the invention la to pr'o- A tion upon the 'elohinglV of the t will more fully appear* as the, nature 7 IUNITED STATES PATENT oEiiioE.'l

ERNEST J. HIFNEB.,

oF LEXINGTON, KENTUCKY,

AssmNoR ois* ONE-TENTH To Dfw.

lSCOTT, OF PINE GROVE, KENTUCKY, AND THREE-FORTIETHS T0 LEN SHOUSE. DR, ERNEST BRADLEY, HOGAN'YANCEY, AND FRANK HAWKINS. I

GARBURETEB FOB, 1NTERNAL-COMBUSTION ENGINL Application filed May 24, 1917. 'p Serial No. 170.748.

new and usefulImprovements in Carbureterw` for interntil-Combustion Engines; and I `do hereby declare the following. to be a t'ull` clear, an'd exact description o f the intention', such-as willi enable others skilled in Ithe art to whioli it appertains to inak'e and `iiSe'"tli""Saii."` 'f r`l`hif-s invent-ion relates to a new and useful e-.irburt-ter tor internal eoinbi'istion engines and is iuoro particularly designed for use in connection(withy automobile engines.

i (neot the `obieota of pro-ii'ide. a novel ,torni ot' operating'iuechanisina it'oi opening the oil controlling;V valve hy t,lie.-,liiftion nt' the en- `gine uponthe `opening ofthe-throttle valve, and to provide. ineunb` operating nieehanie-uil with the atnioephero for venting the saine and toa'lso provide for the pansagle of a portion of the air therethrough 'll'oi `ul-plyingr air Vdireetlaw ti'oin the atnioupheg to the fuel mixture between the.

\ul\'e"and` the engine.

this invention is to oarbui'eter having title the novel torni ot carburetor with an Nugentrieally operated plunger rod t'or toreing' the oil controllingir valve to closed posithrottle 'valve` alud aapahle ot hein;l united ontw-unil)7 h 'itsI wreuti'ie out ot eoutaet with theoil gontrolling'vvalve u'iuultaneously with .d in aeeordanee u'ith the degree oit' opening' ot' the throttle valve to provide for the o peuing ot ,the o'il eontrolling valve by the uut:- `tion oi the engine andvin aeg-.ordauee with the liinit ot'outii'ardinoveiuent ot ,the plunget; roth .l i t i .-'\iiother object of this intention into pro- .Nt-ride,` the` novel tornijof Carlini-eter with adplstable i meanstor limitinglr the' extreme movement of the throttle ifali'e and the plunger rod `iii-.either ottheir diieetione.

` Another object ofthe invention in to pro eide-,a ,'art-iure-tei'-toi' attaining,r the above objeets eousilstiiig of tew parte` simple, in eonstruction, etlioient and durable. and which is eeononiiral to inaiiutin-ture. 1

These andother objects and 'advantages of the Specification of Letters Patent,

t'or zonnet-ting' the the Patented Oct. 15,1918.

invention is more clearlyY uiuleieiomi troni the following description taken in 'connec- Vtion .with the several views in'the aeeoinpanting drawings` wherein ll have dihelosed one embodimentof the intention but' whieh" is suseeptil'ile to alterations and variations in the forni, construction and arrangement of the parts to nieet the exigenoies oil the ycase withoutdeparting t'roin the spirit of the invention or the scope of the claims. i i

4In 'the drawings, u

Figurel 1 is a .side elevation ot' the cara hui'eter. i i' Fig. Q is an end View thereof.

appended Fig. 3 is a i'ertie'al longitudinal sectional view through the eaihureter showing the in terioi detail couati'uctionthereof,V

Referring to the draiiingsi, wherein ainii-1 la i reference characters denote, correspond` ingpaits throughout the several viewstl `denotes` the-air intake casingoi tubo' of the earbureter. provided with the annular flange 2 haiingthe aperture-d ears'. 3 "for securing the eai'lnii1eter tot-he leg of the intake mani# fold .of the enginen and adjacent the oppoi-` site. end of the casing or tube 1 provided the annular rib t against which is adapted to ahnt and be seeured upon this easing: or tube 1 a hot ai r pipe leading `from ani` suitable inean` for heating the air as by thi` exhaust manifold of the engine oi'the like. i t i Suit-ably journaled in thewalls ofthe cas-v ing or tube. 1 in proximity to itsjair intake end is the Shaft 5 uponii'hicli'is adjustably secured the hub 6 ot' theA choke vali' 7zloV- the set-srrew S. and upon tlie'projectingf l-o -the shaft frat the outer Side of tli'e-'easlnlghi' tube` 1 is secured the rocking; ai'in 9 provided' with the sleeve 10 whichl is eonnectediinany suitable manner with 'operating'mechanisms upon the dashboard of a Vehicle.

end of 'the t suitably iouriiuled in the walls'ot-the (..as-

ingor tube vl in proximity to its connection with-the legr of. the intakt` manifold of( the engine is the shaft 11 upon which is adj ustahhv seeuiedthe huh 1'2 ot the throttle. ialvel 13 bythe Het-Screw, 'l-t, and upon the end o't shaft itt which *projects outwardly through i1 at the opposite ond of the making-lower 15l having it the, side wall ot' the casing or tube,l .side troni that.- Which the` fshatt 5 pi'oiects is adiustably Secured one fron between the choke vulve t vulve l he lower end of the otl tube 1T l'lUlleet-s into the oil chamber 1U 'formed or l uerured upon the under side of the casing or tube 1 und provided with the feed pipe 20 hitting'1 its lower portion torrned with the internal threads fdl-t whieh is attached u .supply pipe lending from `any suitable oil supply reservoir, so that there is a Cont-inuoneI supply of oil in the oil elmn'iher .'19 Iand tlutuhe '17. Alsoformed or secured upon ilul u-nder Side of the easing or tube 1 und elhriently surrounding' the oil chamber 1 9 und its feed'. pipe 2() isthe hoty water easing or iurltet 22 provided with the threaded int; zo hose; il enitnbly eonneted with the upper portion ot' the water picket of the engine und also provided with the threaded outlet hos 2-.1 su'itzthly seein-ed to the lower portion of the water izrrltet of the engine` so that, 'the oil Veontsuned in the oil chamber 19 und its fwd pipo 20 will he etheiently heated by the eireulntion oi" the hot waiter through the :ne` or picket.. 22 troio'tlie \\'nterj':u'ltet of the engine to thereinI rn'|. pu.re the. oil within. the rhs-uniud" if? tor the more etlieient. vaporif zzttion oi' 'the oil in the mixing eluunher of the t--ixiugg' or tulle l.

l'pon tinl tippt-renie of the tuloe or (fusing 't und ruiheuntiu'liy .niidwuy hetween its ends formed or uerured the Suction ohuruher iu'depeiultnt ol the mixing rhzunher of the. tithe t hetweeu the vulves i' und 1?. und 'within which rhun'iher loosely operutt-eg the Ins-duo 2li ndjustuhli" threaded upon the oi' the needle vulve :2S und loeled thereon through the medium ot' the, 4-Coln[ )ression umher :3H und the lot-lt nut Si() :also threaded upon theY threaded end '.7 of

the needle faire uhore the piston 2li. The needle rnli'e :2S is provided with the rouwslutped endl 3l for tnet'iing or closing the p1-fry end 1H. ot the oil feed .pipe 17 upon the tu:uio`n o't the.. piston 26 wit'ltin the motion thtnohr i, the eonehztped end 3] ot the net-dlt-wulre heine4 [n'orided .with :tu

" el'ouiiuted stout 31' whit-h Serveis us-u. res; .rietingA derivewithin the oil tutte 17 to prevent. flooding" of the' eztrl'nireter und to insure the prujviug ot the oil should theneedlf.: t't'il've be raised to :in zdonornml heu-ritty throturli any ziecid'eintul cause. The liod ol' the needle valve 28 is sliduhly mounted through the guiding*member or tuhe 52 iol'lned through thut portion of the upper wull of the tuhe or (fusing 1 -und which also provides the hot ltom for the surtion ehnniher 25.

Connectil'tg the upper portion o't' the suetion elmnthoy 2.3 with the end portion ol the raising or tube l between the throttle vulve 13 und the end ot' the tuhe l. which is tronthe exterior umiulur [lungo 35 provided with the oppositel)1 disposed :tpertured eurs 3G. und upon the upper suriuee ot' the flange 5535 is the gasket or put-king; ring: 3T. llpon the' gasket 37 is the top 3R of the suction elnnnher 25. the top 3H heilig provided with the. oppositelyY disposed upertured eurs P31) regis tering;I with the upertured Ours 3G of the fiunge 35 und through these upertured ears extend the threaded steine 4() ot the stundl :irda 4.1 positioned upon the upper surfuee of the top BSund tu'erigidl)v secured upon the top 3S und the top 21H is rigidliv seeured to the/llztngze 35 through the medium ot the nuts which ure st'rewed upon 'the endeI of the threaded stems 4t) 'ut the under side ot' the en rs 3U ol" the llzllige 35. l'pon At he upper ends of' thestundm'dsfA-H :tre 'the journuls 43, in-

it havin',r udjustuhly mounted upon its projecting end the rockin;r :irnr l5 pivotnlly conneeted through the medium ot' the link 4G to the so'inxiginer :mn 4T udjustnhly cured upon the proiertinzel end ofthe throttle. vulve sliut't 11 und just. inw'zu'dl)1 of the rock-` ing! urm 15. Also udjuutubly mounted upon the project ing' end of the throttle lvulve shaft 11 und just inu'urdttr ot'the swinging :trm

."fi 'is the eher-.lt or stop member 48 provided the drawings. 'lhe upper :trui 49 und the lower urm 52 of the stop member 48 are preferably disposed at, substantiallyright angles fed pon'rllhfsliaft-t betweenithe eol (17.54 istvhe .cani orfeceentric 511i 'adaptedto ride in the elongated ofthe eceeiitr-ie strapor head S ot alv-Seatig pin 5.9; The valie seating:

-lhlfugll, the-.'f-extrhally threaded guide ,sleeve f6 whichV is `adjustablyl threaded in. tained in adjusted position through they niethe guide Sleeyte 60 ii'oriiially and suitably spated fronijtlie` Loek nut upon the needle'` valve28when the needle valve. is in closed ,positionfas clearly shown in Fig. 3 ot the i drawings.v The lower end of the valve, SeatLv ing pin. 59, however; proj'eets beyond the forinaintinilig theneedle valve in `elosed position when the. earn-56 and the operating coniieetions of the -ea'ni shaft 44 are in the positions-j shown in Figs'. land 3 ot the dra-wings. i ,j

The operation of the device will be. briei'l \r described as follows z' Assuming the `earburetert'o be-normally inoperative, with the parts .in the positions shown in the draw- Ying u d-"it` is desirous'to start the engine. rating mechanisms are manipulated itsiol'ing` the choke 'Valve 7 in a de'- position. The. throttle valve' Voperating echanisin's `are'also manipulated tor l'iositioji'fiingr thethrottle ralvel'to any de sii-edI degreeV 'of .open position by A'the swing;u ingofitheroeking arm 15; shown in Fig. l, tothe-left]1 At. the saine time 'upon the open ing of the throttle valve `1.3, 'the arnisi ifi and +L' ndrftheireonneetng jlink 46 are simultaieoslyvswungjtoward, the vleft` thereby rotatingthe nam sha'ftrftfi for eausing-the 54V in its'v adjustments. and rigidlyY suction willv also be` created in the upper lower end ot the Vvalve seating pin o" "in their upward posit-ions ag i ll'u'i'erend of the sleeve 6'() and bears "against the upper end of the needle valve 38.-

portion of the sut-tion chanibei Q5 through the inediiun of the connecting pipe, 'which connects the up'peiI portion ot' the suelion rhaniber 25 with the, tube 1 between the throttle valve 't3 and the engine.. 'l`l'i'is`suction created in the upperportion ot' theliuertion chamber will draw the `piston 26 ilpwardly until the nut L30 contacts"withthe nl, wfheie-l by the needle valve 28, which is op ratiielr secured to thepiston 26, will he raie(4 uprwa'rdl v an d the oil will be 'sprayed troni the spray nozzleV or'end4 IS of, the oil supply tube 17 which is now free to heroine thor oughli: `interiiiineil with the airi. preferably heated air. drawn througrhfthe au` intake easing or tube l tor providing' the 'fuel niixture which is now drawn to the engineeih inders by the Suction. As long' as the en! gine is in operation. tlieelt'ectv of the suction through vthe connecting,r pipe, 33 andt-he "np per portion of the suction chamber which is Aiiulependent ot'. the air intake easing o i tube 1; the piston 2G. togetherwithi the needle valve Zfare constantly inaiin 'ifined end ofthe .val ve seating-pin of)` whereby Vrent tube' 24 provides for tlife outwardfiow olE the air within the'lower portionfot' the chamber Q5 when the engine haawbeei'! stopped by the closing of the throttle live 13 and,` the simultaneous torcilngfddwn- 'warlllir oi tfhe `valve fseatingir pin 59 fcni'abrcnig the piston 2G and the needle vrvalve 2H dmvi-ii-rardly for seating; the valvef'in'ftle .spray cnd 18o]u the oil feed tube 17.

` Vhi'lc the pist-01120 within the `suetion Chamber 25 isg'ot sufficient dian'ieterftflnit its A"periphery will le4 in sntlieient *proximity the guide `si'leeve G0 anththus relieve the f .needle valve 28 'ot' the :three ener-ted thereL cranked or otherwise started andiminediagenstfby thepi'n 59." The engine is now' ately upon Suction beiner created within the engine cylinders, air will be drawn through the easing or tube 1 and at the saine time to the inner .surfaces of the wall of tion chamber land to beleliicien't if, actuated. :and uui'ntain'ed inupwardrpostionf b v tht-#suction of the engine. yietothere is" `preferably pioi'ideal sufficienti*spacesv` beftw'een thel peripheryV of the piston "2G-arid the inner Vall of the suction ("han'ihernQ to prevent any possibility of the piston ybinding! against the ywall of the-suctionehafnber which would prevent the efficient-operation of the. piston andthe needle 'YalvaV Ntjthe sametiim` this spacing of .th'episton from the Wall of the slletion chamber allows a small pereentage of the air which has passed i, through the vent tube 34 into the lowerportion ol the Isut-tion chamber 25 to pass this additional air becomes intertnixed with the 'luel mixture 'from the mixing chan'iber ol' the earbureter and adds materially tothe ellieiencr ot' the explosive mixture which is subsetptently conducted to the engi-ne cylin ders. lloweventhe space between the piston and the wall ot' the suction chamber isf not suttieient to interfere in any manner with the etlieient operation ot'lhe piston Qt and the needle valve 2n' bv the suction ot the. engine. but. ot' course. when the engine is stopped. the air in the lower portion ot the chamber 35 beneath thc piston 2o will readily pass outwardlv through the vent tube. 34 for the purposes 'above set Jforth".

l-{aviing described 1n invention. what l' clai'n't as new and desire to seein-obv liet ters Patent. is,:-- 1. ln a carlnn'eter of thc character specified, the combination ot' an intake easing. a throttle valve within said intake easiiur. a mixinglr chamber within said int-alge casing` a tube for 'introducing oil into said mixing chamber. a suction chamber upon said intake` casing' and independent thereof. a suction pipe eonneetiney the. upper portion ot' said suction chamber with the outlet en d of Said inta-ke casing. aval vetor cont-rolling.:- the ftow of oil in to said-mixing ehambc and ha ving! .its stein extendinginto said stu-tion chamber. ay "piston-'upon'said valve. stem and loosely ope-rating within said suction cluunberand actuated b v the suction ot' the engine created above said piston for opening' said oil controlling' valve. an plunger for releasincT and 't'or closing said oil controlling valve simultaneouslv with the openinglantl clos-intl'` ot' sait-l throttle valve. and a. vent pipe connectingthe lower portion of said suction chamber with the atmosphere for supplying' and for relieving air beneath said piston vto provide-tor the tree action of said piston and said oil cont-.rolling valve.

ln a carbtn'eter of therlvnn'aoter speri- `lied. the combination of a-n intake casing. a

throttle valve within said intake casing,l a

clunnlber..la piston up'on 'said mixing-z chamber within, `said intake cas-infr. :p tlub'e for introducing' o1l 1nto 'sa1d 11n-Xing- -ehtuiibelufa suctionchanibeif upon said'. intake. easing and. independent ltl ereof, a suc- 'tion pipo connectlingf'tlie u Ba-id suctgitni chamber r 'portion ol said ,intake casing,A z

'the-.flow of oil into Said inixin'gehamber and ig its stent extendinginto idsutjttion a i stein. and loose y operating within '.'jaid Suction 'chinn berr'z'tnd actuated by the' -s'u'etrn 'Mft -the enhart ecce!tl'ricallv operated gine created above said piston for opening .said oil controlling valve. an eccentrically lthe t'ree action ot said pistou and said oil .controlling valve, a portion of said air passing around said piston and through said suction pipe, wher-eb)v to supplv7 air directly from the atmosphere to the t'uel mixture. bc-

tween t-he throttle valveand the engine.

A 'arbureter comprising an inta-ke. easing havinga throttle valve and shaft, aI suction chamber upon said intake casing and independent thereo'l. a tube tor introducing oil into said intake easing` a -valve coperating with said tube and having its stein project-ing into said suction chamber, a piston upon the end ot' said valve stern within said suction chamber and actuated bythe suction ol1 the engine for raising` said valve from said tube` a removable nguide sleeve adjustably secured through the. top otsaid `suction chamber. a plunger rod slidable through said `guide sleeve. a headupon said plunger rod provided with an elliptical opening. a sha'lt mounted upon the top of said suction chamber. a cani centrally mounted upon said shat't and operating lwithin the elliptical opening ot'- sa'id head tor raising` and lowering -said plunger rod, and means connectingr said cam shaft, with the .shaft ot the 'throttle valvewherebyto operate said plunger rod lo provide for the openingr ot said oil valve bv the suction of `the en intx and :for the closingv ot said oil valve simultane-ousl)- with and in accort'lance with the degli-ee ot opt-nine' andclosing` of `said throttle valve.

1. `\'ratln|rcter eotnprisine` an intake rasino having a throttle ralve and shaft. a suction chamber upon said intake easingl and i-mlcpendmtt thereol'. a tube 'lor'introducing oil into said intake'easing. a valve coperatint;1 with lsaid tube and ha ving its stem projecting' 4into said suction chamber. a piston upon the endot' said valve stem within Said suction chamber and actuated by the suction' ot the engine tor raising'said. valve 'frotnsait-l tube. a removable guide sleeve adfnstably secured through the. top ot said isuction ehauiber. a plunger rod provided ""vvitl'i an elliptical opening. a shaft 'mounted `A upon the top of said suction chamber, a

cam 'centrally mounted upon said shaft and o'perating within the elliptical opening of v vsaid head tor raising andv lowering said plunger rod` a rocker V'arm adjustably mounted upon the ani shaft. a roekerparln adjustably mountedupon the valve shafg and links operatively nonneting Said rocken arms, for causing the simultaneous movement of said plunger rod and said throttle vulve.

5. A carburetei' comprieing un intake cusing having n throttle vulve und shaft, :1 suction chamber upon'said intake casing and independent thereof, u tube for introducing oil into said intuke casing, n valve coperating with Said tube and lmving its stem projecting into said suction chnmber, n piston upon the end of seid. valve stem within. said i -sn'ction `chamber and actuated by the suction of the engine for raising said valve from said tube, n removable guide sleeve edjustably secured through the top of said suction chamber n plunger rod provided with an elhptical opening, n een-aft mounted upon the top of said suction chamber7 a cam centrally mounted upon seid` shaft and operating within the elliptical opening of said head l for-raising and lower-mg said plunger rod,

a rocker arm adjust-ably mounted upon the cem shaft, n rocker arm adjustably mounted 'upon the valve shaft, links operatively connecting said rocker arms, for causing the simultaneous movement of seid plunger rod and said throttle valve, u stop member upon said curbureter in proximity to said throttle `vulve shaft, undnn angle member adjustably leecured upon said throttle valve shaft coactingr with een] stop member for preventing the movement of Seid throttle valve and seid plunger rod in either direction beyond n .predetermined point.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ERNEST J. HIFNER. 

